<p>Upgrade <code>Oracle:8</code> <code>libxml2</code> to version 0:2.9.7-9.0.1.el8_4.2 or higher.<br>This issue was patched in <code>ELSA-2021-2569</code>.</p>

Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion') Affecting libxml2 package, versions <0:2.9.7-9.0.1.el8_4.2

Threat Intelligence

0.08% (36^th percentile)

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Snyk ID SNYK-ORACLE8-LIBXML2-2584262
published 10 Apr 2022
disclosed 9 Jul 2021

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Introduced: 9 Jul 2021

CVE-2021-3541 Open this link in a new tab CWE-776 Open this link in a new tab

How to fix?

Upgrade Oracle:8 libxml2 to version 0:2.9.7-9.0.1.el8_4.2 or higher.
This issue was patched in ELSA-2021-2569.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libxml2 package and not the libxml2 package as distributed by Oracle. See How to fix? for Oracle:8 relevant fixed versions and status.

A flaw was found in libxml2. Exponential entity expansion attack its possible bypassing all existing protection mechanisms and leading to denial of service.

References

CVSS Scores

version 3.1

Attack Vector (AV)

Network
Attack Complexity (AC)

Low
Privileges Required (PR)

Low
User Interaction (UI)

None

Scope (S)

Unchanged

Confidentiality (C)

None
Integrity (I)

None
Availability (A)

High

Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion') Affecting libxml2 package, versions <0:2.9.7-9.0.1.el8_4.2

Severity

Based on Oracle Linux security rating